₦airaland Forum

I would post a question u guys should try ur best to answer..if u cant i would drop the solution.....others are welcome to drop questions....



Note:dont drop a question u dont have answer to

Question 1:
Write a function that checks if a variable has been defined.

Jaddo19:
Question 1:
Write a function that checks if a variable has been defined.

A defined variable in JS is one that has a value. If there is no value, its means JS will consider it as undefined..

function checkUndefined(x){
if (typeof(x) === 'undefined') {
return "Value is undefined";
else{
return "Value is defined";
}
}

console.log(checkUndefined(x)); // Just type any letter in the alphabet not defined with a value.

Alexanda07:
A defined variable in JS is one that has a value. If there is no value, its means JS will consider it as undefined..

function checkUndefined(x){
if (typeof(x) === 'undefined') {
return "Value is undefined";
else{
return "Value is defined";
}
}

console.log(checkUndefined(x)); // Just type any letter in the alphabet not defined with a value.

Nice one...my solution was without typeof....all the same

function checkVar(word) {

if (typeof word === 'undefined'){
return "Variable not defined";
}
}

nerdshed:
function checkVar(word) {

if (typeof word === 'undefined'){
return "Variable not defined";
}
}

Nice....

My solution....

 var num=45;
 function isset(x){
 if(x=="undefined" ){
 return ' not defined';
}else{
 return 'defined';
}
}
 isset(num);

Challenge 2.
LOOPING A TRIANGLE
write a loop that makes 7 calls to console.log to output the following
#
##
###
####
#####
######
#######

Jaddo19:
Challenge 2.
LOOPING A TRIANGLE
write a loop that makes 7 calls to console.log to output the following
#
##
###
####
#####
######
#######

var item = '#' ;

for (let count=0; count<7; count++) {
console.log(item);
item+='#';
}



OR



var item = '#' ;
var count = 0;

while (count<7){
console.log(item);
item+='#' ;
count++;
}

Alexanda07:
var item = '#' ;

for (let count=0; count&lt;7; count++) {
console.log(item);
item+='#';
}



OR



var item = '#' ;
var count = 0;

while (count&lt;7){
console.log(item);
item+='#' ;
count++;
}

I avnt run that code buh am really not sure it is gonna work

The # is to output 7 times...so why incrementing it again...think harder bro u are close to d answer

Jaddo19:
The # is to output 7 times...so why incrementing it again...think harder bro u are close to d answer

Like you said, you have not run it. So you dont conclude without checking out. But I have checked it out both of them and it run perfectly...

Jaddo19:
The # is to output 7 times...so why incrementing it again...think harder bro u are close to d answer

As a new programmer like you, Its all about and thinking and more PRACTICE and not theory and assumptions like you are looking at it now.

Alexanda07:
As a new programmer like you, Its all about and thinking and more PRACTICE and not theory and assumptions like you are looking at it now.

I was wrong....i didnt check d code properly also didnt run... Am sorry

Jaddo19:
Challenge 2.
LOOPING A TRIANGLE
write a loop that makes 7 calls to console.log to output the following
#
##
###
####
#####
######
#######

var x;
for (x = "#"; x.length <= 7; x += "#" )
console.log(x);

Jaddo19:
Challenge 2.
LOOPING A TRIANGLE
write a loop that makes 7 calls to console.log to output the following
#
##
###
####
#####
######
#######

function triHashes(a) {
if (a.length <= 7) {
console.log(a);
return triHashes(a + '#');
}
}

triHashes('#');

Olumyco:
function triHashes(a) { if (a.length <= 7) { console.log(a); return triHashes(a + '#'); } }
triHashes('#');

alert 'Only for intermediate'

Nice one guys.....i Av been busy lately....everyone is welcome to drop a challenge

Lemme drop this simple one so beginners can participate.
.
Challenge 3.

Write a function that works just like console.log

Jaddo19:
Lemme drop this simple one so beginners can participate.
.
Challenge 3.

Write a function that works just like console.log

console.log = (...a) => console.error(...a);


LoL

Kodejuice:
console.log = (...a) =&gt; console.error(...a);


LoL

Eeehmm

Since no one has a solution to d challenge should I drop d answer nii

Jaddo19:
Since no one has a solution to d challenge should I drop d answer nii

Gimme 24 more hours am trying to get the solution

console.log("#"
console.log("##"
console.log("###"
console.log("####"
console.log("#####"
console.log("######"
console.log("#######"

// Using Repeat Method
for(var i = 1; i < 8; i++){
console.log("#".repeat(i))
}

modash:
console.log("#"
console.log("##"
console.log("###"
console.log("####"
console.log("#####"
console.log("######"
console.log("#######"

// Using Repeat Method
for(var i = 1; i < 8; i++){
console.log("#".repeat(i))
}

please share your method as well

Jaddo19:
Since no one has a solution to d challenge should I drop d answer nii

all the solutions given to your second problem work
all of them

var repeatt = "#"
for(var i = 1; i < 8; i++){ console.log(repeatt); repeatt += "#"}

Jaddo19:
Lemme drop this simple one so beginners can participate.
.
Challenge 3.

Write a function that works just like console.log

Sigh!! How else do you want to write on js console without the console object
There is no other way to get a function that works just like console.log without referring to the console object.

Please post the answer, maybe I might be wrong, I am willing to learn something new...

modash:
all the solutions given to your second problem work
all of them

I did not test all d codes buh I would drop my own solution so those who got it wrong can correct them selves

Solution to challenge 3:

 function print(x){
 return x;
}
 let add=2+2;
Print(add);

Jaddo19:
Solution to challenge 3:

 function print(x){
 return x;
}
 let add=2+2;
Print(add);

This function would not write on the console.